sandt38

Odds are the truck has a th350, but if it has a TH700R you would trash it with the 454. The 383 would push the 700's limits, but the 454's torque would trash it quick. When people came in with the later model 454SS trucks we always suggested the 400 swap, as even mild work on the 454 would waste the 700 tranny. You will have to move the trans crossmember and get the driveshaft lengthened, but it is really a simple swap from the 700 to the 400.

You would need more tranny behind the 454. I would suggest a 383.

Imagine 5 pounds of blower boost to top it off! It was really a great truck.

I had a customer with a red 85 several years back. The body was mint, but he needed a drivetrain update. I yanked the carbureted 305, built a 383 for it (350 punched .030 over with a 400 SBC crank and rods), and dropped an edelbrock TBI manifold and throttle body with a Vortec blower. I yanked the TH350 trans and put in a simple TH400 with a shift kit. I swung out the rear highway gears for .373s. The truck looked amazing and ran hard. It was one of my favorite complete builds in the shop. I built several race cars, but to me the complete transformation of that gorgeous truck really stood out. The guy spent a shit ton of money, but the outcome was awesome.

Many thanks! Bookmarked.

That's not terribly far from me. Who did the tuning on your bike in Rockingham?

Will do Todd. Look forward to doing business with you.

Cool. I blew my motor, so once I get it torn all the way down I'll likely be ordering some stuff from you anyways. Do you offer stock cranks, by any chance?

He is. I saw it on his FB page. I asked him why and he said it was because he didn't have the time to ride it.